Submission #1241446

#	Time	Username	Problem	Language	Result	Execution time	Memory
1241446		samarmahfooz	Knapsack (NOI18_knapsack)	C++20	17 / 100	1 ms	328 KiB

knapsack

#include <bits/stdc++.h>
#define int long long
using namespace std;

int s,n;
vector<int> value, weight, copies;


void solve(){
    cin>>s>>n;
    value.resize(n+1);
    copies.resize(n+1);
    weight.resize(n+1);

    for(int i=0;i<n;i++){
        cin>>value[i]>>weight[i]>>copies[i];
    }
    vector<pair<int,int>> new_items;
    for(int i=0;i<n;i++){
        for(int j=1;copies[i]>0;j *= 2){
            int group_size = min(copies[i],j);
            new_items.push_back({j*weight[i], j*value[i]});
            copies[i] -= group_size;
        }
    }
    vector<int> dp(s+1,0);
    for(int i=0;i<new_items.size();i++){
        for(int j=s;j>=new_items[i].first;j--){
            dp[j] = max(dp[j], new_items[i].second + dp[j - new_items[i].first]);
        }
    }

    cout<<dp[s]<<"\n";
}

signed main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int n_test = 1;
    // cin>>n_test;
    while(n_test--){
        solve();
    }
}

• Subtask 1: 0 / 12
• Subtask 2: 17 / 17
• Subtask 3: 0 / 20
• Subtask 4: 0 / 24
• Subtask 5: 0 / 27